Dibromochloromethane

Quantico, Town Of

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	8	0	ND
2015	1.30 ppb	2	2	1.20 ppb - 1.39 ppb
2016	0.573 ppb	3	1	ND - 1.72 ppb
2017	0.480 ppb	4	3	ND - 0.800 ppb
2018	ND	20	0	ND
2019	0.848 ppb	4	2	ND - 1.73 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-02-24	14-02911	ND
2014-05-27	14-08058	ND
2014-05-27	14-08056THM	ND
2014-05-27	14-08059THM	ND
2014-05-27	14-08060THM	ND
2014-08-26	14-13044THM	ND
2014-12-31	1412311530THM	ND
2014-12-31	1412311529THM	ND
2015-08-27	VA010-DCLS	1.20 ppb
2015-11-24	460024-INBODEN E	1.39 ppb
2016-05-25	6E27040-01THM	ND
2016-08-25	6H30012-01	1.72 ppb
2016-11-30	E161100356	ND
2017-02-28	7C02033-01	ND
2017-05-31	E170501937	0.600 ppb
2017-08-25	1708251636-THM	0.520 ppb
2017-11-17	E171004173	0.800 ppb
2019-02-27	9C01077-01	ND
2019-05-24	9E29136-01	1.66 ppb
2019-08-20	9H22103-01	1.73 ppb
2019-11-27	E191102121	ND